CVE-2011-2059

Name: CVE-2011-2059
Creator: NVD / NIST
Published: 2011-10-22T02:59:19.323+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.56%

Last modified Jun 16, 2026

CVE-2011-2059 is a vulnerability of currently unknown severity. The ipv6 component in Cisco IOS before 15.1(4)M1.3 allows remote attackers to conduct fingerprinting attacks and obtain potentially sensitive information about the presence of the IOS operating system via an ICMPv6 Echo Request packet containing a Hop-by-Hop (HBH) extension header (EH) with a 0x0c01050c value in the PadN option data, aka Bug ID CSCtq02219.. EPSS estimates a 1.56% chance of exploitation in the next 30 days.

Description

The ipv6 component in Cisco IOS before 15.1(4)M1.3 allows remote attackers to conduct fingerprinting attacks and obtain potentially sensitive information about the presence of the IOS operating system via an ICMPv6 Echo Request packet containing a Hop-by-Hop (HBH) extension header (EH) with a 0x0c01050c value in the PadN option data, aka Bug ID CSCtq02219.

Metrics

EPSS Probability

1.56%

72.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Cisco	Ios	< 15.1\(4\)m1.3

References

http://blogs.cisco.com/security/1999tcp-redux-the-ipv6-flavorBroken Link
http://tools.cisco.com/security/center/viewIpsSignature.x?signatureId=36606&signatureSubId=0Vendor Advisory
http://blogs.cisco.com/security/1999tcp-redux-the-ipv6-flavorBroken Link
http://tools.cisco.com/security/center/viewIpsSignature.x?signatureId=36606&signatureSubId=0Vendor Advisory

Timeline

Published: Oct 22, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-2059?

How severe is CVE-2011-2059?

Severity scoring for CVE-2011-2059 is pending analysis. The EPSS model estimates a 1.56% probability of exploitation in the next 30 days.

How do I fix CVE-2011-2059?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-2059?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST